Michael wrote:
<< The problem is that it collapses why anything taps it, >>
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Michael:
I have this lens (M50mmf2.0, new) and it takes a fair amount of pressure to
extend or collapse it. Further, it would have to be "tapped" square on for it
to collapse accidently; tapped on one side does not move it! If this helps?
Cheers,
Arturo